The Mercury F40 is a popular choice in the 40HP class due to its blend of performance, efficiency, and reliability. With a 747cc inline 3-cylinder engine, this motor generates impressive torque, especially in the low RPM range – perfect for quick holeshots (fast acceleration) and carrying heavy loads. Electronic Fuel Injection (EFI) optimizes the fuel-air mix across all operating conditions, contributing to operation that is up to 30% quieter and smoother than a leading competitor. The Mercury F40 weighs approximately 98 kg (for a long shaft model with electric start and power trim), which is competitive for its horsepower. It comes standard with Power Trim and Tilt, allowing easy adjustment of the engine angle for maximum performance under different speeds and sea conditions. Another notable feature is SmartCraft compatibility – the Mercury F40 can feed engine data to digital gauges, giving you access to fuel flow, RPM, and more in real time. A Command Thrust (CT) version is available, featuring a larger gearcase and prop to improve handling on heavier boats or during water sports. Comprehensive engine protections (overheat and low oil pressure warnings) and Mercury’s multi-layer corrosion protection ensure long-term durability. The Mercury F40 EFI delivers quick planing, quiet operation, and confident power, making it an excellent outboard for a wide range of uses – from commercial fishing workhorses to family day boats.
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Engine hp:40 hp
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Engine type:Inline 3 cylinders
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Displacement:747 cc (L)
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Max. RPM:5500 - 6000 RPM RPM
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Alternator Amp / Watt:18A / 226W
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Fuel recommendation:Unleaded regular, minimum 87 octane (R+M/2) or 90 RON, maximum 10% ethanol
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Engine protection system:Oil pressure, RPM, Temperature
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Reduction gear ratio:2.00:1
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Ignition type:ECM 07 Digital Inductive (CT model) ECM 70
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Recommended oil:25W-40 Synthetic Blend
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Fuel system:EFI
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Cooling system:Water cooling + thermostat
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Gears:F-N-R
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Exhaust system:Through the propeller
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Propeller:Yes